Fuel-oil



C. D. STEWART. run ou nzcuum'wc system.

i Y npucmlonruznssvnn.19m. 1,314,161 1 Patented Aug. 26,1919.

QM@ s lill! W sl/ll,

NVENTOR C. D. STEWART.

FUEL OIL HfGULAING SYSTEM.

APPLicAuou FILED sEPT.11.1918.

1,3 14, 1 61 Patented Aug. 26, 1919.

2 SHEETSdSHEET 2.

\ "l, "V 11.. w

INVENTOR Corlron Dfewor to first Vbrin the cams 24 and 35 into cngagement with the valves 22 and 33, lifting the v'alves from their seats.` 1 l If the movement of the damper shaft 13 continues sufficiently in the same direction, cams 25 and 36 are brought into contact with the res ctive valves 23 and 34, lifting said valves flibm their seats.

The relative time of movement between cams 24 and 35, and also between the cams 25 and 36 is arranged to meet the desired conditions as to time-ufo ening for the fuel and thev atomizing medium valves, and likewise the time of movement of the cams 24 and 35 with respect to the time of movement of the cams 25 and 36 is regulated by adjustin the relative angularity of the two sets o cams by means of the turnbuekle 42.

Fuel oil under pressure from the oil ump 7 Hows through the pi e' 8 and ranch pipe 9 to the chamber 2 of each controller 6 and outfiow from this chamber is controlled by the valves 28, 29, and 30. Fuel oil llowin ast* the valve 28 enters chamber 15, anV tlience flows through pipe 11 to the burner 3.

Fuel oil flowing past the valve 29 enters chamber 31 and oil flowing past the valve 30 enters chamber 32.

Steam for atomizingthe-fuel flows from steam pipe 10 to chamber 16 'of the controller 6 and thence Hows past the valves 17, 18 and 19 to -the respective chambers 14, 20, and'21, steam` supplied to chamber 14 flofwlng throu h pipe 12 to the burner 3.

Y If t e dam er o erating shaft is rotated so as to open t e asli pit doors and the stack dempers sufficiently to provide correct` draft for the largest fire, the rod 40'will be actuated so as to lift all the valves 22, 23, 33

and 34 from their seats, so that fuel oil from the chambers 31 and 32 can flow to chamber 15 and thence to the burner 3 as well as atpmizing steam from the chambers 20 and 21 to the chamber 14 which is connected to the burner 3, the above How of oil and steam" being in addition to that su plied directly through the valves 28 and 1 When the steam in the boiler has reached the desired maximum pressure and it is desired to reduce the fires a certain amount, the dam r shaft 13 is rotated in the direction ten ingA toclose the ash pit doors and the damper. The first movement of the shaft 13 in this direction, causes the rotation of the cam shafts 26 and 37 and the varrangement of the cams is such that the valves 23 andV 34 are first allowed to seat, and the seating of these valves may occur simultaneously, or one before the other, as desired.

With the valves 23 and 34. Seated, 'the fire is reduced a predetermined amount, and

he lire remaining may be further re.

duced, if desired, by manually operatingthe valves 17 and 28, which control a direct sup-V plyof fuel and steam to the burners.`

he apparatus hereinbefore described may be adjusted so as to provide a direct gradual ran from minimum to maximum, instead of t e step-by-step range, b opening the fuel valves 29 and 30 wide an also the atomlzirp medium valves 18 and 19.

e flow of fuel oil through the device wlll then be proportional to the opening created by the valves 33 and'34, as they areV moved on and off their seats by the cams 35 and 36.

The flow of atomizing medium will be proportlonal to the openings created by the valves .22'and 23, as they are movin on and off their seats b the cams 24 and 2 Durlng the irect ran e of control from mlnlmum to maximum, Just described, the pilot re fuel valve 28 and the pilot fire atomizin valve 17 provide for manually ad- ]ustmg t e deree of pilot fire desired.

It will now e seen that the apparatus is adapted to control the fire either stepbystep, or by a gradual range from maximum to minimum 1n roportion to the degrefrof opening of the ampers.

It will also be evident that other forms of fuel may be employed instead of oil, such as wdered or u verized fuel. avng now escribed my invention, what I claim as new and desire to secure by Letters Patent, is: 1

1. In a fuel oil regulating system, the combinatlon with a damper operatin meehanism, of different s ts of valves or supplying fuel oil and atomizing medium and means operated by said damper controlling mechanism upon a predetermined movement thereof for actuating one set of valves and upon a further predetermined movement for actuating another set of valves.

l In a fuel oil regulating system, the combination with a dam er operatin mechansm, o a plurality o .setsof va ves for supplying fuel oil and atomizing melrm, sha ts operated by said damper erating mechanism, and cams operated by sald shafts for actuating one set of valves upon a predetermined movement of the damper operab mechanism for operating said valves serially, 10 ing mechanism and for actuating another set to effect e Step-by-step regulation of the How of valves' upon a. further movement of the 0f fuel oil and atoming medium. damper operating mechanism. In testimony whereof I have hereunto set 3. ln a fuel oil regulating syetem, the my hand.

combination with a damper operating mechq CARLTON D. STEWART. anism, of a plurality of valves for supply- XVitneSSeS: ing fuel oil and atomizing medium and W. S, Woon,

means operated by the damper actuating B. A, {n.wn. 

